What's the go with the RCA input?

[UFO-Rpi3b5000]

Please explain? I mean it doesn't even work and all I wanted it for was so that it can play music. This soundcard sux! I am able to play through headphones but who the he'll wants a soundcard that only does that? I hate headphones.. Please somebody give me some advice on how I can get this thing to work or how you got yours to work if you ever did?

[wh7qq]

If you can play through the headphone jack, the input is clearly working. Your problem may be with the output jacks which must go to an auxiliary input on a receiver or amplifier or a separate amplifier. You will not be able to drive a speaker from the output of the AudioInjector. The board does not "sux" but you probably misread the feature listing before you bought. It plays fantastically well but it must be set up properly with the proper outboard equipment.